Ideally, pregnant women should do everything they can to have a full term pregnancy, because babies born even a few weeks early risk being less healthy and possibly suffering from long term disabilities. So what can moms to be do to keep their babies...
Turbines with one or two blades are actually even more efficient. But because theyre also lighter and tend to spin faster, theyre also noisier. These designs also require a special tilting hub that acts as a sort of shock absorber, which is expensive...
If youve ever driven by a wind farm, you may have noticed that the turbines most likely have three blades. Not two, not five, but three. Now, you may think that if the point of a wind turbine is to capture wind, wouldnt five blades capture more wind...
Then that foot stops and the other one accelerates. And so on. Thinner, lighter things are easier to accelerate than heavy, massive ones. So if you want speed, put the muscles up high and the skinny down low. Speed If you really want speed, you could...
Why horses have skinny legs? Whats the use of a skinny leg? The answer is Running. The skinniest lower legs belong to the fastest runners. Think of how a deer can move, as opposed to a tortoise. Why is that? Its because when you run, or indeed walk,...
Does money make us happy? Well, according to that famous Beatles song, no: Money Cant Buy Me Love. But, of course, the Beatles also had a hit with their cover of the Motown song Money, Thats What I Want. So, Which Is It? The answer, according to psyc...
The friction between the flakes is the same force that causes sand to form a pile rather than spread out like a puddle. In fact, this same principle applies to all granular materials. If you cut the corner out of a bag of flour only a small amount wi...
Why dont the cornflakes at the bottom of the box get crushed by the weight of the flakes on top? Thats the question on this Moment of Science. Research by mathematician Bruce Pitman of the State University of New York at Buffalo indicated there are t...
But although it happens passively, arm swinging plays an important role in making your stride more efficient. It does this by counterbalancing your torso and hips and keeping them from twisting and bobbing too much. Holding your arms still against yo...
Have you ever wondered why we swing our arms while walking? Its a curious phenomenon, since arms dont play an obvious role in locomotion. You can still walk normally when your arms are full of groceries or with your hands in your pockets, so why do w...
